JP6691853B2 - Liquid cleaning composition for kitchen - Google Patents

Description

  The present invention relates to a liquid detergent composition for kitchen.

  In recent years, as consumers have become more aware of the environment and economy, the amount of liquid cleaning composition for kitchen (hereinafter sometimes referred to as liquid cleaning agent) used when cleaning tableware, cooking utensils, etc. There is a demand for a liquid detergent composition that can obtain an excellent cleaning effect (that is, has a high detergency) even if the amount is reduced.

Washing of dishes and cooking utensils is usually performed while pouring a liquid detergent into a dish-washing sponge.
The timing at which the liquid detergent is added to the sponge may be “when the amount of bubbles visible when the sponge is rubbed becomes small”.
In the conventional liquid detergent, the amount of foam is small from the beginning of washing to the end of washing, or even after the amount of foam is large at the beginning of washing, the quality of the foam becomes watery, and the state of large amount of foam does not continue, The liquid detergent tends to be added to the sponge more often. Therefore, the liquid detergent is excessively used in excess of the amount originally required to remove oil stains and the like. Therefore, it is important for a liquid cleaning agent for kitchens to have a high detergency against oil stains and the like, and also to enhance the sustainability of foam during cleaning (persistence of foam amount from the start of washing to the end thereof).
On the other hand, when cleaning dishes, cooking utensils and the like with a sponge coated with a liquid cleaning agent, the cleaning agent may come into direct contact with the hand and cause rough hands. Therefore, it is desired to develop a technique that can reduce rough hands.

For such a problem, Patent Document 1 specifies α-olefin sulfonic acid, amine oxide type surfactant, and coconut oil fatty acid diethanolamide, and specifies α-olefin sulfonic acid and amine oxide type surfactant. A cleaning composition has been proposed which is combined in the ratio of. The cleaning agent of Patent Document 1 has a high cleaning power and is excellent in the prevention of rough hands.
Further, in Patent Document 2, a liquid containing α-olefin sulfonic acid, an amine oxide type surfactant, polyoxyethylene lauric acid monoethanolamide, a branched polyoxyethylene alkyl ether, and sodium lactate in a specific ratio. Detergent compositions have been proposed. According to Patent Document 2, the detergency and the sustainability of the amount of foam are excellent, and the dry feeling of the hand skin after washing can be reduced.

JP-A-56-55498 JP, 2011-153233, A

The detergent composition of Patent Document 1 does not have sufficient foam persistence during washing. In addition, the liquid detergent composition of Patent Document 2 is insufficient in detergency and hand roughening preventive property.
Therefore, an object of the present invention is to provide a liquid detergent composition for kitchen, which is excellent in detergency against oil stains and the like, has good foam persistence during cleaning, and is also excellent in preventing rough hands.

The present invention has the following aspects.
[1] Component (A): α-olefin sulfonic acid or a salt thereof,
(B) component: amine oxide type surfactant,
Component (C): a compound represented by the following general formula (c1),
^{_{R 1 -CO-NH-CH 2}} CH 2 O- (EO) n1 -H ··· (c1)
[In the formula (c1), R ¹ represents a linear or branched alkyl group having 6 to 24 carbon atoms or a linear or branched alkenyl group having 6 to 24 carbon atoms, and a carbon atom of CO The carbon atom attached to is a primary or secondary carbon. EO represents an oxyethylene group, n1 represents the average number of added moles of the oxyethylene group, and is a number from 0 to 5. ]
(D) component: contains an anionic surfactant other than the (A) component,
((A) component + (D) component) / (B) component has a mass ratio of 0.6 to 1.8, and (A) component / (D) component has a mass ratio of Liquid cleaning composition for kitchen, which is 1.5 to 13.0.
[2] The liquid detergent composition for kitchen according to [1], wherein the component (D) contains a linear alkylbenzene sulfonate.
[3] (1) or [2], wherein the mass ratio represented by ((A) component + (B) component + (D) component) / (C) component is 1.5 to 7.2. Liquid cleaning composition for kitchen.
[4] The liquid detergent composition for kitchen according to any one of [1] to [3], further containing water.

  According to the liquid cleaning composition for a kitchen of the present invention, the cleaning power against oil stains and the like is excellent, the foam persistence during cleaning is excellent, and the hand roughening prevention property is also excellent.

(Liquid cleaning composition for kitchen)
The liquid detergent composition for kitchen of the present invention is a composition containing components (A) to (D).

<(A) component>
The component (A) is α-olefinsulfonic acid or a salt thereof (hereinafter, also referred to as “AOS”). By including the component (A), the foam durability of the liquid detergent is improved.
10-18 are preferable and, as for carbon number of the alkyl group of AOS, 12-14 are more preferable.
The component (A) may be used alone, or may be a mixture of two or more kinds of AOS having different carbon numbers.
The component (A) may be in the form of acid or may form a salt. As the salt, alkali metal salts such as sodium salt and potassium salt are preferable.
As the component (A), a commercially available product may be used. Examples of commercially available products include “Lipolan (registered trademark) LB-440” (trade name) manufactured by Lion Specialty Chemicals Co., Ltd.

  The content of the component (A) in the liquid detergent is preferably 1.0 to 15.0% by mass, and 3.0 to 12.0% by mass, based on the total mass of the liquid detergent. More preferably, it is particularly preferably 4.0 to 7.0% by mass. When the content of the component (A) in the liquid cleaning agent is at least the above lower limit, the cleaning power against oil stains and the foam persistence during cleaning tend to be better. On the other hand, when it is at most the above upper limit, the hand roughening prevention property is likely to be better.

<(B) component>
The component (B) is an amine oxide type surfactant. By including the component (B), the cleaning power of the liquid cleaning agent and the hand roughening prevention property are improved.
The component (B) preferably contains a compound represented by the following general formula (b1). The compound represented by the following general formula (b1) is a semipolar surfactant. In the present specification, the semipolar surfactant is a surfactant having a semipolar bond (a bond having an intermediate property between a nonpolar bond and a polar bond), and a solution in which the semipolar surfactant is dissolved. Alternatively, it means a cationic, anionic, or amphoteric substance depending on the pH of the dispersed system.
R < ¹¹ >-(A) _X- N (-R < ¹² >) (-R < ¹³ >)-> O ... (b1).
[In the formula (b1), R ¹¹ represents a linear or branched alkyl group having 8 to 18 carbon atoms or a linear or branched alkenyl group having 8 to 18 carbon atoms. R ¹² and R ¹³ each independently represent an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group. A is ^{-C = O (-NH-R 14} ) - ^{represents, R 14} represents an alkylene group having 1 to 4 carbon atoms. x is a number from 0 to 1. ]
In the general formula (b1), R ¹¹ is a linear or branched alkyl group having 8 to 18 carbon atoms or a linear or branched alkenyl group having 8 to 18 carbon atoms, and having 8 carbon atoms. -18 linear or branched alkyl groups are preferred. R ¹¹ is more preferably a linear or branched alkyl group having 10 to 14 carbon atoms.
R ¹² and R ¹³ are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, an alkyl group having 1 to 3 carbon atoms is preferable, a methyl group is more preferable, and R ¹² and R ¹³ are It is particularly preferable that both are methyl groups.
A is ^{-C = O (-NH-R 14} ) - it is. R ¹⁴ is an alkylene group having 1 to 4 carbon atoms, and a propyl group is more preferable. x is a number of 0 or 1, and 0 is preferable.
Examples of the compound represented by the general formula (b1) include lauryl dimethyl amine oxide, coconut alkyl dimethyl amine oxide, lauryl diethyl amine oxide, and lauric acid amidopropyl dimethyl amine oxide. Among them, lauryl dimethylamine oxide is preferable from the viewpoint that the detergency against oil stains becomes better. These may be used alone or in combination of two or more.
A commercially available product can be used as the lauryl dimethylamine oxide, and examples thereof include "Kadenax (registered trademark) DM12D-W (C)" (trade name) manufactured by Lion Specialty Chemicals.
The component (B) may contain another amine oxide type surfactant other than the compound represented by the general formula (b1).

  The content of the component (B) in the liquid detergent is preferably 0.5 to 10.0% by mass, more preferably 2.0 to 9.0% by mass, based on the total mass of the liquid detergent. Particularly preferably, it is 4.0 to 8.0% by mass. When the content of the component (B) is at least the above lower limit value, the detergency and the hand roughening prevention property tend to be better. Further, if it is at most the above upper limit, the foam persistence during washing tends to be better.

<(C) component>
The component (C) in the present invention is a compound represented by the following general formula (c1). The component (C) is a so-called fatty acid monoethanolamide type surfactant. When the liquid detergent for kitchen of the present invention contains the component (C), the foam durability of the liquid detergent is improved.
^{_{R 1 -CO-NH-CH 2}} CH 2 O- (EO) n1 -H ··· (c1)
[In the formula (c1), R ¹ represents a linear or branched alkyl group having 6 to 24 carbon atoms or a linear or branched alkenyl group having 6 to 24 carbon atoms, and a carbon atom of CO The carbon atom attached to is a primary or secondary carbon. EO represents an oxyethylene group, n1 represents the average number of added moles of the oxyethylene group, and is a number from 0 to 5. ]
In general formula (c1), R ¹ has 6 to 24 carbon atoms, and preferably 8 to 14 carbon atoms.
R ¹ may be linear or branched.
In R ¹ , the carbon atom bonded to the carbon atom of CO is primary carbon or secondary carbon. The carbon atom of R ¹ bonded to the carbon atom of CO is preferably a primary carbon.
n1 represents the average number of moles of oxyethylene groups added, and is a number of 0 to 5, preferably a number of 1.5 to 3. When n1 is in such a range, the detergency and foam persistence are particularly improved. When n1 is 0, the component (C) is fatty acid ethanolamide. When n1 is greater than 0, the component (C) is (poly) oxyethylene fatty acid monoethanolamide.
Examples of the compound represented by the formula (c1) include lauric acid monoethanolamide (n1 is 0), polyoxyethylene coconut oil fatty acid monoethanolamide (n1 is 1.5), polyoxyethylene coconut oil fatty acid monoethanolamide ( n1 is 2), polyoxyethylene coconut oil fatty acid monoethanolamide (n1 is 3), polyoxyethylene coconut oil fatty acid monoethanolamide (n1 is 5), polyoxyethylene lauric acid monoethanolamide (n1 is 1.5) , Polyoxyethylene lauric acid monoethanolamide (n1 is 2), polyoxyethylene lauric acid monoethanolamide (n1 is 3), polyoxyethylene lauric acid monoethanolamide (n1 is 5), polyoxyethylene myristic acid monoethanol An amide (n1 is 1.5), and Polyoxyethylene oleic acid monoethanolamide (n1 of 1.5), and the like. These compounds may be used alone or in combination of two or more. Among these, polyoxyethylene lauric acid monoethanolamide (n1 of 1.5 to 3) is preferable because the balance between detergency and foam persistence is better.

  The content of the component (C) in the liquid detergent is preferably 0.5 to 10.0% by mass, more preferably 1.5 to 8.5% by mass, based on the total mass of the liquid detergent. 2.0-7.0 mass% is especially preferable. When the content of the component (C) is at least the above lower limit value, the cleaning power against oil stains tends to be better. When it is at most the above upper limit, the foam durability and the hand roughening prevention property tend to be better.

<(D) component>
The component (D) in the present invention is an anionic surfactant other than the component (A). When the liquid detergent for kitchen of the present invention contains the component (D), the foam persistence of the liquid detergent is improved.
Examples of the component (D) include linear alkyl benzene sulfonates, alkyl sulfate ester salts, branched alkyl sulfate ester salts, alkyl ether sulfate ester salts, alkenyl ether sulfate ester salts, alkane sulfonates, α -Sulfo fatty acid ester salts and the like. Examples of the salt form include alkali metal salts such as sodium salt and potassium salt, and alkanol ammonium salts such as monoethanol ammonium salt and diethanol ammonium salt.

Specific examples of the component (D) include straight-chain alkylbenzene sulfonates having 10 to 15 carbon atoms, polyoxyethylene (1) straight-chain alkyl (C12 and C represent the number of carbons, the same applies hereinafter) sulfate sodium salt. Polyoxyethylene (2) straight chain alkyl (C12) sulfate sodium salt, polyoxyethylene (3) straight chain alkyl (C12) sulfate sodium salt, polyoxypropylene (0.4) polyoxyethylene (1.5 ) Linear alkyl (C12) sulfuric acid ester sodium salt, polyoxyethylene (1) linear alkyl (C12 / C14 = 75/25; derived from natural fats and oils) sulfuric acid sodium salt, polyoxyethylene (2) linear alkyl (C12) / 14 = 75/25; natural fat and oil) sodium sulfate ester, polyoxyethylene (4) Alkyl (C12 / C14 = 75/25; derived from a natural fat) sulfate sodium salts, secondary alkanesulfonate sodium salt having a carbon number of 14-17.
Here, for example, “polyoxyethylene (1)” means that the average number of repeating oxyethylene groups is 1 (the average number of moles of ethylene oxide added is 1). "C12 / C14 = 75/25; derived from natural fats and oils" means a mixture of a compound having a straight chain alkyl group having 12 carbon atoms and a compound having a straight chain alkyl group having 14 carbon atoms, and the mass ratio thereof is It means that it is 75/25 and that it is a linear alkyl group derived from natural fats and oils.
Among these, as the component (D), a straight-chain alkylbenzene sulfonate having 10 to 15 carbon atoms, or polyoxyethylene (2) straight-chain alkyl (C12 / 14 = 75/25; natural fat and oil-derived) sodium sulfate ester It is preferable to contain a salt, and it is more preferable to contain a linear alkylbenzene sulfonate having 10 to 15 carbon atoms.
As the component (D), one type may be used alone, or two or more types may be used in combination.

  The content of the component (D) in the liquid detergent is preferably 0.3 to 10.0% by mass and 0.5 to 3.0% by mass based on the total mass of the liquid detergent. Is more preferable. When the content of the component (D) is at least the above lower limit value, the cleaning power against oil stains tends to be better. On the other hand, when it is at most the above upper limit, the hand roughening prevention property is likely to be better.

In the liquid detergent for kitchen of the present invention, "((A) component + (D) component) / (B) component mass ratio" means the content of the (B) component in the liquid detergent. With respect to, the mass ratio of the total content of the component (A) and the component (D). The mass ratio represented by ((A) component + (D) component) / (B) component is 0.6 to 1.8, preferably 0.8 to 1.5, and 1.0 to 1.3. Is more preferable.
If the mass ratio represented by ((A) component + (D) component) / (B) component is within the above range, a liquid detergent excellent in detergency, foam persistence at the time of washing, and hand roughening prevention property. Is obtained.
Further, the total amount of the components (A) and (D) in the liquid detergent (the total amount of anionic surfactant in the liquid detergent) is 3 to 20% by mass based on the total mass of the liquid detergent. It is preferably 5-10% by mass. When the total amount of the component (A) and the component (D) is within the above range, the cleaning power, the foam persistence during cleaning, and the hand roughening prevention property can be more easily achieved.

In the present invention, the “(A) component / (D) component mass ratio” means the mass ratio of the (A) component content to the (D) component content in the liquid detergent. To do. The mass ratio represented by (A) component / (D) component is 0.5 to 13.0, preferably 2.0 to 9.0, and more preferably 3.0 to 7.0.
When the mass ratio represented by the component (A) / the component (D) is within the above range, a liquid detergent excellent in detergency, foam lasting property during washing, and hand roughening preventive property can be obtained.

In the present invention, "((A) component + (B) component + (D) component) / (C) component mass ratio" refers to the content of the (C) component in the liquid detergent, It means the mass ratio of the total content of the component (A), the component (B) and the component (D). The mass ratio represented by ((A) component + (B) component + (D) component) / (C) component is preferably 1.5 to 7.2, more preferably 2.0 to 6.0, 3.0 to 5.0 is more preferable.
If the mass ratio represented by ((A) component + (B) component + (D) component) / (C) component is within the above range, the detergency, the foam persistence during washing, and the hand roughening prevention property This makes it easier to obtain a superior liquid detergent.

  The liquid detergent for kitchen of the present invention has a viscosity (value measured after 60 seconds using a B-type viscometer at a measurement temperature of 25 ° C. and a rotation speed of 60 rpm) of 50 to 150 mPa · s. Is preferred. When the viscosity is within the above range, the dischargeability from the container and the usability (e.g., ease of application to dishes to be washed such as dishes and sponges) tend to be better.

The liquid detergent for kitchen of the present invention preferably contains water as a solvent from the viewpoint of ease of preparation of the liquid detergent, solubility in water when used, and the like.
The content of water in the liquid cleaning agent is preferably 85% by mass or less, more preferably 40 to 85% by mass, and further preferably 60 to 75% by mass, based on the total mass of the liquid cleaning agent. When the water content is at least the above lower limit, gelation of the liquid detergent is suppressed, and the liquid stability of the liquid detergent over time becomes better. On the other hand, if it is at most the above upper limit, it becomes easy to balance the components (A) to (D). Further, the liquid viscosity does not become too low, and the usability becomes good.

<Arbitrary ingredients>
The kitchen liquid cleaner of the present invention may contain any component other than the above-mentioned components (A) to (D), if necessary, within a range that does not impair the effects of the present invention.
Examples of the optional component include components that are usually blended with a liquid detergent for kitchen, and examples thereof include a preservative, a hydrotrope, and a surfactant (optional surfactant other than the above components (A) to (D). ), A pH adjuster, a disinfecting component, a bleaching component, a chelating agent, a polymer compound, a dye, and a fragrance.

[Hydrotrope]
Examples of the hydrotrope agent include monohydric alcohols having 2 to 4 carbon atoms, glyceryl ether having 4 to 10 carbon atoms, toluene sulfonic acid, toluene sulfonate, cumene sulfonic acid, cumene sulfonate, benzoic acid, benzoic acid. Salt etc. are mentioned.
Examples of the monohydric alcohol having 2 to 4 carbon atoms include ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol and the like.
Examples of the glyceryl ether having 4 to 10 carbon atoms include glycerin and hexyl glyceryl ether.
Among these, a monohydric alcohol having 2 to 4 carbon atoms, toluenesulfonic acid or a salt thereof is preferable from the viewpoint of the effect of dissolving the components (A) to (D) in the liquid detergent and the feeling of use, and ethanol, para. Toluene sulfonate is more preferred. The hydrotrope agent may be used alone or in combination of two or more kinds.
When a hydrotrope is used, the content of the hydrotrope in the liquid detergent is preferably 1 to 30% by mass, and preferably 4 to 20% by mass, based on the total mass of the liquid detergent. More preferable.

[Optional surfactant]
Examples of the optional surfactant include nonionic surfactants other than the component (C), cationic surfactants, and the like.
The nonionic surfactant other than the component (C) is not particularly limited as long as it has the effects of the present invention, and examples thereof include polyoxyalkylene addition type nonionic surfactants, alkyl glycosides, and sorbitan fatty acid esters. Among these, polyoxyalkylene addition type nonionic surfactants are preferable. Among the polyoxyalkylene addition type nonionic surfactants, polyoxyalkylene alkyl ethers are more preferable, and compounds represented by the following general formula (I) are further preferable.
_{^{R 25 -O- (R 26 O)}} y -H ··· (I)
[In the formula (I), R ²⁵ represents a linear or branched hydrocarbon group having 10 to 18 carbon atoms, and R ²⁶ O represents an oxyalkylene group having 1 to 3 carbon atoms. y represents the average number of repetitions of R ²⁶ O and is a number of 1 to 20. ]
In formula (I), R ²⁵ is preferably a linear hydrocarbon group having 10 to 18 carbon atoms. Further, R ²⁶ O is preferably an oxyethylene group or an oxypropylene group. y is preferably a number of 4 to 20, more preferably a number of 8 to 20, and particularly preferably a number of 8 to 16.
Among the compounds represented by the formula (I), R ²⁵ is a linear alkyl group having 10 to 18 carbon atoms, R ²⁶ O is an oxyethylene group or an oxypropylene group, and y is 8 to 20. Preferred is a polyoxyalkylene alkyl ether.

  The cationic surfactant is not particularly limited as long as it has the effects of the present invention, and known ones can be used. Specifically, didecyldimethylammonium chloride, didecyldimethylammonium methosulfate, distearyldimethylammonium chloride, dioctyldimethylammonium chloride, distearyldihydroxyethylammonium chloride, ditallow tallowalkyldimethylammonium chloride, di (stearoyloxyethyl) dimethyl. Ammonium chloride, di (oleoyloxyethyl) dimethylammonium chloride, di (palmitoyloxyethyl) dimethylammonium methosulfate, di (stearoyloxyisopropyl) dimethylammonium chloride, di (oleoyloxyisopropyl) dimethylammonium chloride, di (oleoyl) Oxybutyl) dimethyl ammonium chloride Di (stearoyl oxy ethyl) methyl-hydroxyethyl ammonium methosulfate, tri (stearoyl oxyethyl) methyl methosulfate, and the like. The "beef tallow alkyl" group has 14 to 18 carbon atoms.

The total amount of the surfactant (the total amount of the components (A) to (D) and the optional surfactant) in the liquid detergent for kitchen of the present invention is 10 to 50 mass with respect to the total mass of the liquid detergent. %, And more preferably 15 to 35% by mass.
The optional surfactant may be used alone or in combination of two or more.

[Disinfection component]
Suitable examples of the disinfecting component include zinc compounds such as zinc sulfate, zinc oxide, and zinc hydroxide. Among them, zinc sulfate and zinc oxide are more preferable, and zinc sulfate is particularly preferable. The disinfecting components may be used alone or in combination of two or more.
The content of the disinfecting component in the liquid detergent is preferably 0.01 to 0.5 mass% with respect to the total weight of the liquid detergent. When the content of the disinfecting component is within the above range, the disinfecting effect is easily obtained and the liquid stability is easily secured.

[Chelating agent]
Examples of the chelating agent include hydroxycarboxylic acids such as glycolic acid, citric acid and gluconic acid; aminocarboxylic acids such as ethylenediaminetetraacetic acid and hydroxyethylethylenediaminetriacetic acid; and polyacrylic acid and copolymers such as acrylic acid / maleic acid. Can be mentioned.
The content of the chelate component in the liquid detergent is preferably 0.1 to 1 mass% with respect to the total weight of the liquid detergent.

[PH adjuster]
Examples of the pH adjusting agent include hydrochloric acid, sulfuric acid, phosphoric acid, glycolic acid, citric acid, sodium hydroxide, potassium hydroxide, monoethanolamine, diethanolamine, triethanolamine and the like. The pH adjusters may be used alone or in combination of two or more.
The pH of the liquid detergent for kitchen of the present invention at 25 ° C is preferably 6 to 9, and more preferably 6 to 8. In the present invention, the pH of the liquid detergent (temperature adjusted to 25 ° C.) is a value measured by a method according to JIS K3362-1998 using a pH meter (product name: HM-30G, manufactured by Toa DKK Co., Ltd.). Refers to.

(Production method)
The liquid detergent for kitchen of the present invention can be obtained, for example, by dispersing components (A) to (D) and, if necessary, other components in water as a solvent. Specifically, it can be produced by adding each component to water and stirring and mixing.

(how to use)
Examples of the method of using the liquid cleaning agent for the kitchen of the present invention include a method of pouring an appropriate amount of the liquid cleaning agent alone into a sponge and the like, and washing the dishes and cooking utensils with the sponge. Since the liquid detergent for kitchen of the present invention has a high detergency and is excellent in foam persistence, it is possible to wash dishes, cooking utensils and the like with a small amount of use.

The liquid detergent for kitchen of the present invention is a combination of the component (A) (AOS) with the component (D) (anionic surfactant other than the component (A)), and is represented by the component (A) / component (D). It is possible to improve the foam persistence during washing by controlling the mass ratio of ((A) component + (D) component) / (B) component within a specific range. it can.
The liquid cleaning agent for kitchen of the present invention contains components (A) to (D) and water, and component (C) is polyoxyethylene lauric acid monoethanolamide and polyoxyethylene coconut oil fatty acid monoethanol. At least one surfactant selected from amides, wherein the component (D) is polyoxyethylene (2) straight-chain alkyl (C12 / 14 = 75/25; natural fat and oil derived) sulfuric acid ester sodium salt, and It is preferred to include at least one anionic surfactant selected from chain alkyl benzene sulfonates. Further, the mass ratio represented by ((A) component + (D) component) / (B) component is 0.6 to 1.8, and the mass ratio represented by (A) component / (B) component. Is preferably 2.0 to 9.0. Further, the mass ratio represented by ((A) component + (B) component + (C) component) / (D) component is preferably 2.0 to 6.0.

  Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited to the following description. In addition, "%" shows "mass%" unless there is particular notice.

(Raw materials used)
The abbreviations in Tables 1 to 3 represent the following.
<(A) component>
A-1: Sodium α-olefin sulfonate (AOS) in which the alkyl group has 14 carbon atoms (trade name: Liporan LB-440, manufactured by Lion Specialty Chemicals Co., Ltd.).

<(B) component>
B-1: Lauryl dimethylamine oxide (AX) (trade name: Kadenax DM12D-W (C), manufactured by Lion Specialty Chemicals Co., Ltd.) (in the general formula (b1), R ¹¹ is a straight chain having 12 carbon atoms. An alkyl group, R ¹² and R ¹³ are methyl groups, and x is 0).

<(C) component>
C-1: Polyoxyethylene lauric acid monoethanolamide (trade name: Amizet (registered trademark) 2L-Y, manufactured by Kawaken Fine Chemicals Co., Ltd.) (In the general formula (c1), R ¹ is a straight chain having 11 carbon atoms. A compound having an n1 of 2).
C-2: Polyoxyethylene coconut oil fatty acid monoethanolamide (trade name: Amizet 5C, manufactured by Kawaken Fine Chemicals Co., Ltd.) (in the above general formula (c1), R ¹ is an alkyl group derived from coconut oil, and n1 is Compound of 5).

<(D) component>
D-1: Polyoxyethylene (2) straight-chain alkyl (C12 / 14 = 75/25; derived from natural fats and oils) sulfate sodium salt (AES) (trade name: Shinoline (registered trademark) SPE-1250, Shin-Nippon Rika Co., Ltd.) Made by the company).
D-2: A straight-chain sodium alkylbenzene sulfonate (LAS) having 10 to 15 carbon atoms in the alkyl group (Taika Power (registered trademark) L124 (trade name, manufactured by Teika Co., Ltd.) neutralized with sodium hydroxide ).

<Other>
B'-1: Lauric acid amidopropyl dimethylamino acetic acid betaine (LPB) (trade name: Enadicol (registered trademark) L-30B, manufactured by Lion Specialty Chemicals Co., Ltd.).
C'-1: Coconut oil fatty acid diethanolamide (CDE) (trade name: Amizole (registered trademark) CDE-G, manufactured by Kawaken Fine Chemicals Co., Ltd.).

<Common ingredients>
AE: polyoxyethylene lauryl ether (trade name: LMAO-90, manufactured by Lion Chemical Co., Ltd.) (in the above general formula (I), R ²⁵ is a linear alkyl group having 12 to 14 carbon atoms, and R ²⁶ O is an oxyethylene group and y is 15).
SB: sodium benzoate, manufactured by Kanto Chemical Co., Inc.
p-TSH: paratoluenesulfonic acid, manufactured by Kanto Chemical Co., Inc.
EtOH: ethanol, manufactured by Kanto Chemical Co., Inc.
PEG: polyethylene glycol (average molecular weight 1000) (trade name: PEG # 1000, manufactured by Lion Specialty Chemicals Co., Ltd.).
CA: citric acid (trade name: purified citric acid (anhydrous), manufactured by Fuso Chemical Industry Co., Ltd.).
ZnSO ₄ : Zinc sulfate heptahydrate, manufactured by Junsei Chemical Co., Ltd.
Preservative (i): 1,2-benzisothiazolin-3-one (trade name: PROXEL (registered trademark) XL2, manufactured by Arch Chemicals).
Preservative (ii): 2-methyl-4-isothiazolin-3-one (trade name: Neolone (registered trademark) M-10, manufactured by Rohm and Haas).
Gelatin: FGS-100, manufactured by Nippi Corporation.
Dye 1: Yellow No. 203.
Dye 2: Blue No. 1.
Perfume pH adjusting agent: sodium hydroxide, manufactured by Kanto Chemical Co., Inc.
Solvent: water, distilled water.

<Composition of common component (X)>
SB: 1.5% by mass
p-TSH: 2.0 mass%
EtOH: 5.0 mass%
CA: 0.26 mass%
ZnSO ₄ : 0.25% by mass
Fragrance: 0.3% by mass
pH adjuster: Appropriate amount Water: Balance

<Composition of common component (Y)>
AE: 0.5 mass%
SB: 1.7 mass%
p-TSH: 0.8 mass%
EtOH: 4.0 mass%
PEG: 0.7 mass%
CA: 0.26 mass%
ZnSO ₄ : 0.25% by mass
Preservative (i): 0.002 mass%
Preservative (ii): 0.002 mass%
Gelatin: 0.08 mass%
Fragrance: 0.3% by mass
pH adjuster: Appropriate amount Water: Balance

<Composition of common component (Z)>
SB: 2.5 mass%
p-TSH: 0.4 mass%
EtOH: 3.0 mass%
CA: 0.25 mass%
Preservative (i): 0.001 mass%
Preservative (ii): 0.001 mass%
Dye 1: 0.0001 mass%
Dye 2: 0.00001 mass%
Fragrance: 0.2 mass%
pH adjuster: Appropriate amount Water: Balance

The “mass%” of the blended composition of the common components means the mass ratio of each component to the total mass of the liquid detergent. Further, the content “balance” of water is the amount necessary to make the liquid detergent 100% by mass as a whole. In addition, the content “appropriate amount” of the pH adjusting agent is the amount required to bring the liquid cleaning agent to the pH in the table.
Further, “(A + D) / B” in the table means the mass ratio of the total content of the component (A) and the component (D) to the content of the component (B) in the liquid detergent. Moreover, "A / D" means the mass ratio of the content of the component (A) with respect to the content of the component (D) in the liquid detergent. Moreover, "(A + B + D) / C" means the mass ratio of the total content of the (A) component, the (B) component, and the (D) component with respect to the content of the (C) component in the liquid detergent.

(Examples 1 to 21, Comparative Examples 1 to 8)
According to the compositions shown in Tables 1 to 3, 1000 g of the liquid detergent of each example was prepared by the production method shown below (the components whose compounding amounts are not described in the table are not blended). The unit of the blending amount in the table is% by mass, and all the components show the pure equivalent amount.

[Method for producing liquid cleaning agent]
First, (A) component, (D) component, and ethanol were put into a 1 L beaker, and sufficiently stirred with a magnetic stirrer (product name: F-606N, manufactured by Fine). Subsequently, the components (B), (C), and common components other than ethanol were added to the beaker and further stirred. After the stirring treatment, an appropriate amount of a pH adjuster was added as necessary so that the pH at 25 ° C was in the range of 6 to 8. Then, distilled water was added so that the total amount was 100% by mass, and the mixture was further stirred to obtain a liquid detergent.
The above-mentioned pH is obtained by directly immersing the glass electrode in the composition using a glass electrode type pH meter (product name: HM-30G, manufactured by Toa DKK Co., Ltd.) after adjusting the temperature of the liquid detergent to 25 ° C. The value shown after 1 minute was measured. The pH at 25 ° C is shown in the table.

<Evaluation method>
With respect to the liquid cleaning agent of each example, the cleaning power, the foam persistence during cleaning, and the hand roughening prevention property were evaluated by the following evaluation methods.
[Cleaning power against oil stains]
(Preparation of oil stain)
As oil stains, beef tallow (manufactured by Wako Pure Chemical Industries, Ltd.), which is a solid fat, and Sudan IV (manufactured by Kanto Kagaku Co., Ltd.) were mixed to prepare colored beef tallow (colored beef tallow). The Sudan IV concentration in the colored tallow was set to 1% by mass.
(Preparation of dirt model)
1 g of the colored beef tallow was applied evenly on the entire inner surface of a plastic container (product name: Neokeeper, manufactured by Iwasaki Kogyo Co., Ltd.) measuring 10 cm in length × 15 cm in width × 5 cm in height. And
(Washing test)
38g of tap water and 2g of liquid cleaning agent of each example were added to a dishwashing sponge (product name: ScotchBright (registered trademark), manufactured by Sumitomo 3M Ltd.) measuring 11.5 cm in length x 7.5 cm in width x 3 cm in height. After picking and rubbing 10 times by hand, rubbing was performed. Specifically, with a sponge containing tap water and a liquid cleaning agent, rub the inner bottom surface of the dirt model 10 times, the inner side surfaces once, and the inner four corners 5 times, and then rinse with tap water. It was operated.
After the scrubbing, the degree of oil stain removal on the cotton inside the container was evaluated according to the following evaluation criteria (four-level evaluation). Of the following evaluation criteria, A and B were passed.
(Evaluation criteria)
A: No stain residue of colored beef tallow is visually observed, and there is no slickness due to residual colored beef oil.
B: The stain residue of the colored beef tallow is not visually observed, but there is slight nulling due to the residual colored beef tallow.
C: The stain residue of the colored beef tallow is visually observed, and there is a null due to the residual colored beef tallow.
D: A considerable amount of stain residue of colored beef tallow is seen.

[Evaluation of foam persistence]
As a model oil stain, a plate (diameter 21 cm) in which 1 g of olive oil and 5 g of water was collected was used as a model oil stain plate, and 30 model oil stain plates were prepared. 38 g of tap water at 25 ° C. and 2 g of liquid detergent composition are respectively taken into a dishwashing sponge (product name: Scotch Bright, manufactured by Sumitomo 3M Ltd.) measuring 11.5 cm in length × 7.5 cm in width × 3 cm in height. The dish-washing sponge after rubbing three times by hand was brought into contact with the model oil stain dish to make the model oil stain and the dish-washing sponge blend together. After that, the dish-washing sponge was pressed against the model oil stain dish and moved by drawing two circles to scrub and wash. Then, without adding new tap water and liquid detergent composition to the dish-washing sponge, the model oil stain dish is continuously rubbed and no bubbles remain on the model oil stain dish after rub-washing. I continued to wash until I could not see it. Next, after washing, the bubbles existing in each model oil stain dish were transferred to a 500 mL graduated cylinder, and the amount of the bubbles (mL) was measured for each dish and evaluated based on the following evaluation criteria. Of the following evaluation criteria, A and B were passed.
(Evaluation criteria)
A: The number of dishes for which a foam amount of 100 mL or more could be confirmed after washing was 5 or more.
B: The number of dishes for which a foam amount of 100 mL or more could be confirmed after washing was 3 to 4.
C: The number of dishes for which the amount of bubbles of 100 mL or more could be confirmed after washing was 1-2.
D: The number of dishes in which a foam amount of 100 mL or more could be confirmed after washing was 0.

[Evaluation of hand roughness prevention]
The anti-chapping property after washing was evaluated based on the protein denaturation rate.
A 200 ppm aqueous solution of BSA (albumin crystal product from bovine serum) and a 0.2% aqueous solution of a liquid detergent are brought into contact with each other for 30 minutes so as to have a ratio of 1: 1, and a CD value (Circular Dichroism: Yen by JASCO J-720 Spectropolarimeter). Dichroism) was measured, and the protein denaturation rate (%) was calculated by the following calculation formula. The control used tap water.
Protein denaturation rate (%) = (CD value of control−CD value of liquid detergent composition) × 100
Based on the obtained protein denaturation rate, the hand roughening preventive property was evaluated according to the following evaluation criteria. Of the following evaluation criteria, A was passed.
(Evaluation criteria)
A: No rough hands (protein denaturation rate is less than 6%).
B: Somewhat rough (protein denaturation rate is 6% or more and less than 13%).
C: Very rough (protein denaturation rate is 13% or more).

As shown in Tables 1 to 3, the liquid detergents of Examples 1 to 21 were excellent in detergency and foam persistence, and were also excellent in prevention of rough hands. On the other hand, the liquid detergents of Comparative Examples 1 and 2 which do not contain any of the components (A) to (D), the mass ratio represented by ((A) component + (D) component) / (B) component Is outside the range of 0.6 to 1.8, the liquid detergents of Comparative Examples 3 to 4 and 7 to 8 and the mass ratio represented by the component (A) / component (D) is 1.5 to 13. The liquid cleaning agents of Comparative Examples 5 to 6, which were out of the range of 0, were inferior in the cleaning power, the foam persistence, or the hand roughening prevention property.
From the above results, it was confirmed that the liquid cleaning agent for kitchen of the present invention has excellent cleaning power against oil stains, etc., has good foam persistence during cleaning, and has excellent anti-roughness property.

Claims (3)

Component (A): α-olefin sulfonic acid or salt thereof,
(B) component: amine oxide type surfactant,
Component (C): a compound represented by the following general formula (c1),
During ^{_{R 1 -CO-NH-CH 2}} CH 2 O- (EO) n1 -H ··· (c1) [ formula (c1), ^{R 1} represents a linear or branched alkyl having 6 to 24 carbon atoms Represents a group or a linear or branched alkenyl group having 6 to 24 carbon atoms, and the carbon atom bonded to the carbon atom of CO is a primary carbon or a secondary carbon. EO represents an oxyethylene group, n1 represents the average number of added moles of the oxyethylene group, and is a number from 0 to 5. ]
Component (D): at least one selected from linear alkylbenzene sulfonates having 10 to 15 carbon atoms and polyoxyethylene linear alkyl sulfate sodium salt having linear alkyl groups having 12 to 14 carbon atoms. Containing
((A) component + (D) component) / (B) component has a mass ratio of 0.6 to 1.8, and (A) component / (D) component has a mass ratio of Liquid cleaning composition for kitchen, which is 1.5 to 13.0. The component (D) is the linear alkylbenzenesulfonate, the liquid detergent composition for kitchen according to claim 1.   The liquid for kitchen according to claim 1 or 2, wherein the mass ratio represented by ((A) component + (B) component + (D) component) / (C) component is 1.5 to 7.2. Cleaning composition.